package com.liang.config;

import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.commons.collections.map.LinkedMap;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

@Configuration
public class ShiroConfig {

    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("getDefaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager){
        ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
        //设置安全管理器
        bean.setSecurityManager(defaultWebSecurityManager);

        //添加shiro的内置过滤器
        /*
            anon：无需认证就可以访问
            authc：必须认证了才可以访问
            user：必须拥有记住我功能才能用
            perms：拥有对某个资源的权限才能访问
            role：拥有某个角色权限才能访问
        */
        //拦截
        Map<String, String> filterMap = new LinkedHashMap<>();

        filterMap.put("/user/*","authc");
        bean.setFilterChainDefinitionMap(filterMap);

        //授权
        filterMap.put("/user/add","perms[user:add]");
        filterMap.put("/user/update","perms[user:update]");

        //设置登录页面
        bean.setLoginUrl("/toLogin");
        //设置未授权页面
        bean.setUnauthorizedUrl("/unauth");
        return bean;
    }
    //DefaultWebSecurityManager
    @Bean
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){
        DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
        //关联realm
        securityManager.setRealm(userRealm);
        return securityManager;
    }
    //创建realm对象，需要自定义类
    @Bean
    public UserRealm userRealm(){
        return new UserRealm();
    }

    //整合ShiroDialect：用来整合shiro和thymeleaf
    @Bean
    public ShiroDialect getShiroDialect(){
        return new ShiroDialect();
    }
}
